rs772912674

Positions:

• chr14-65076618-T-C
• chr14-65076618-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_002382.5(MAX):​c.341A>G​(p.Asn114Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MAX NM_002382.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.65

Genes affected

MAX (HGNC:6913): (MYC associated factor X) The protein encoded by this gene is a member of the basic helix-loop-helix leucine zipper (bHLHZ) family of transcription factors. It is able to form homodimers and heterodimers with other family members, which include Mad, Mxi1 and Myc. Myc is an oncoprotein implicated in cell proliferation, differentiation and apoptosis. The homodimers and heterodimers compete for a common DNA target site (the E box) and rearrangement among these dimer forms provides a complex system of transcriptional regulation. Mutations of this gene have been reported to be associated with hereditary pheochromocytoma. A pseudogene of this gene is located on the long arm of chromosome 7. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM1: In a chain Protein max (size 158) in uniprot entity MAX_HUMAN there are 10 pathogenic changes around while only 0 benign (100%) in NM_002382.5
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17004156).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAX	NM_002382.5	c.341A>G	p.Asn114Ser	missense_variant	5/5	ENST00000358664.9	NP_002373.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MAX	ENST00000358664.9	c.341A>G	p.Asn114Ser	missense_variant	5/5	1	NM_002382.5	ENSP00000351490.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 15, 2016

The p.N114S variant (also known as c.341A>G), located in coding exon 5 of the MAX gene, results from an A to G substitution at nucleotide position 341. The asparagine at codon 114 is replaced by serine, an amino acid with highly similar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6503 samples (13006 alleles) with coverage at this position. To date, this alteration has been detected with an allele frequency of approximately 0.006% (greater than 20000 alleles tested) in our clinical cohort. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Hereditary pheochromocytoma-paraganglioma Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 06, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 485706). This variant has not been reported in the literature in individuals affected with MAX-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 114 of the MAX protein (p.Asn114Ser). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.050
BayesDel_addAF	Benign	-0.047	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	18
DANN	Uncertain	0.97
DEOGEN2	Benign	0.11	.;.;T;T;T
Eigen	Benign	-0.38
Eigen_PC	Benign	-0.13
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.91	D;D;D;D;D
M_CAP	Benign	0.0051	T
MetaRNN	Benign	0.17	T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-0.17	.;N;.;.;.
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	-0.35	N;N;N;N;N
REVEL	Benign	0.26
Sift	Benign	0.21	T;T;T;T;T
Sift4G	Benign	0.52	T;T;T;T;.
Polyphen		0.0	B;B;.;.;.
Vest4		0.079
MutPred		0.24		.;Gain of phosphorylation at N114 (P = 0.025);.;.;.;
MVP		0.67
MPC		0.79
ClinPred		0.092	T
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.031
gMVP		0.25

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs772912674; hg19: chr14-65543336;